/*******************************************************************************
 * Copyright 2017 Bstek
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License.  You may obtain a copy
 * of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations under
 * the License.
 ******************************************************************************/
package com.bstek.urule.parse.flow;

import com.bstek.urule.model.flow.DecisionItem;
import com.bstek.urule.model.flow.DecisionNode;
import com.bstek.urule.model.flow.DecisionType;
import org.apache.commons.lang.StringUtils;
import org.dom4j.Element;

import java.util.ArrayList;
import java.util.List;

/**
 * @author Jacky.gao
 * @since 2014年12月23日
 */
public class DecisionNodeParser extends FlowNodeParser<DecisionNode> {
    public DecisionNode parse(Element element) {
        DecisionNode decision = new DecisionNode(element.attributeValue("name"));
        decision.setEventBean(element.attributeValue("event-bean"));
        String decitionType = element.attributeValue("decision-type");
        if (StringUtils.isNotEmpty(decitionType)) {
            decision.setDecisionType(DecisionType.valueOf(decitionType));
        }
        decision.setX(element.attributeValue("x"));
        decision.setY(element.attributeValue("y"));
        decision.setWidth(element.attributeValue("width"));
        decision.setHeight(element.attributeValue("height"));
        decision.setConnections(parseConnections(element));
        List<DecisionItem> items = new ArrayList<DecisionItem>();
        for (Object obj : element.elements()) {
            if (obj == null || !(obj instanceof Element)) {
                continue;
            }
            Element ele = (Element) obj;
            if (!ele.getName().equals("item")) {
                continue;
            }
            DecisionItem item = parseDecisionItem(ele);
            items.add(item);
        }
        decision.setItems(items);
        return decision;
    }

    private DecisionItem parseDecisionItem(Element element) {
        DecisionItem item = new DecisionItem();
        item.setTo(element.attributeValue("connection"));
        String script = element.getStringValue();
        item.setScript(script);
        String percent = element.attributeValue("percent");
        if (StringUtils.isNotEmpty(percent)) {
            item.setPercent(Integer.valueOf(percent));
        }
        return item;
    }

    public boolean support(String name) {
        return name.equals("decision");
    }
}
